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authorDavid Woodhouse <David.Woodhouse@intel.com>2012-10-09 18:03:21 +0400
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-10-09 18:04:25 +0400
commitffe315012510165ce82e4dd4767f0a5dba9edbf7 (patch)
treef601cd980af9d0ced5ca9aedecef4fa0d2ca0e15 /include/linux/genalloc.h
parente2d3a35ee427aaba99b6c68a56609ce276c51270 (diff)
parent4a8e43feeac7996b8de2d5b2823e316917493df4 (diff)
downloadlinux-ffe315012510165ce82e4dd4767f0a5dba9edbf7.tar.xz
Merge tag 'disintegrate-mtd-20121009' of git://git.infradead.org/users/dhowells/linux-headers
UAPI Disintegration 2012-10-09 Conflicts: MAINTAINERS arch/arm/configs/bcmring_defconfig arch/arm/mach-imx/clk-imx51-imx53.c drivers/mtd/nand/Kconfig drivers/mtd/nand/bcm_umi_nand.c drivers/mtd/nand/nand_bcm_umi.h drivers/mtd/nand/orion_nand.c
Diffstat (limited to 'include/linux/genalloc.h')
-rw-r--r--include/linux/genalloc.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/linux/genalloc.h b/include/linux/genalloc.h
index 5e98eeb2af3b..dd7c569aacad 100644
--- a/include/linux/genalloc.h
+++ b/include/linux/genalloc.h
@@ -29,6 +29,20 @@
#ifndef __GENALLOC_H__
#define __GENALLOC_H__
+/**
+ * Allocation callback function type definition
+ * @map: Pointer to bitmap
+ * @size: The bitmap size in bits
+ * @start: The bitnumber to start searching at
+ * @nr: The number of zeroed bits we're looking for
+ * @data: optional additional data used by @genpool_algo_t
+ */
+typedef unsigned long (*genpool_algo_t)(unsigned long *map,
+ unsigned long size,
+ unsigned long start,
+ unsigned int nr,
+ void *data);
+
/*
* General purpose special memory pool descriptor.
*/
@@ -36,6 +50,9 @@ struct gen_pool {
spinlock_t lock;
struct list_head chunks; /* list of chunks in this pool */
int min_alloc_order; /* minimum allocation order */
+
+ genpool_algo_t algo; /* allocation function */
+ void *data;
};
/*
@@ -78,4 +95,14 @@ extern void gen_pool_for_each_chunk(struct gen_pool *,
void (*)(struct gen_pool *, struct gen_pool_chunk *, void *), void *);
extern size_t gen_pool_avail(struct gen_pool *);
extern size_t gen_pool_size(struct gen_pool *);
+
+extern void gen_pool_set_algo(struct gen_pool *pool, genpool_algo_t algo,
+ void *data);
+
+extern unsigned long gen_pool_first_fit(unsigned long *map, unsigned long size,
+ unsigned long start, unsigned int nr, void *data);
+
+extern unsigned long gen_pool_best_fit(unsigned long *map, unsigned long size,
+ unsigned long start, unsigned int nr, void *data);
+
#endif /* __GENALLOC_H__ */